SILVESTRE, Ricardo Sousa. Paranormal modal logic – Part I. The system K? and the foundations of the logic of skeptical and credulous plausibility. Logic and Logical Philosophy, [S. l.], v. 21, n. 1, p. 65–95, 2012. DOI: 10.12775/LLP.2012.005. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2012.005. Acesso em: 3 jul. 2025.